1 // SPDX-License-Identifier: GPL-2.0 2 // Copyright (c) 2017 Facebook 3 4 #include <linux/ptrace.h> 5 #include <linux/bpf.h> 6 #include "bpf_helpers.h" 7 8 struct { 9 int type; 10 int max_entries; 11 int *key; 12 int *value; 13 } results_map SEC(".maps") = { 14 .type = BPF_MAP_TYPE_ARRAY, 15 .max_entries = 4, 16 }; 17 18 SEC("kprobe/sys_nanosleep") 19 int handle_sys_nanosleep_entry(struct pt_regs *ctx) 20 { 21 const int key = 0, value = 1; 22 23 bpf_map_update_elem(&results_map, &key, &value, 0); 24 return 0; 25 } 26 27 SEC("kretprobe/sys_nanosleep") 28 int handle_sys_getpid_return(struct pt_regs *ctx) 29 { 30 const int key = 1, value = 2; 31 32 bpf_map_update_elem(&results_map, &key, &value, 0); 33 return 0; 34 } 35 36 SEC("uprobe/trigger_func") 37 int handle_uprobe_entry(struct pt_regs *ctx) 38 { 39 const int key = 2, value = 3; 40 41 bpf_map_update_elem(&results_map, &key, &value, 0); 42 return 0; 43 } 44 45 SEC("uretprobe/trigger_func") 46 int handle_uprobe_return(struct pt_regs *ctx) 47 { 48 const int key = 3, value = 4; 49 50 bpf_map_update_elem(&results_map, &key, &value, 0); 51 return 0; 52 } 53 54 char _license[] SEC("license") = "GPL"; 55 __u32 _version SEC("version") = 1; 56